Adjustable louver



g- 5, 1940- F A. WHEELER I 2, 1 ,516

ADJUSTABLE LOUVER Filed Aug. 14, 1939 0 4. WHEELER INVENTOR.

ATTORNEY.

Patented Aug. 6, 1940 ADJUSTABLE LOUVER Fred A. Wheeler, Los Angeles,Calif essignor to Graves Company, Los Angeles, Calif a corporation ofCalifornia Application August '14,

2 Claims.

The present invention pertains to an adjustable louver adapted to beinserted into windows, such as windows of the double hung type, for thepurpose of permitting ventilation and at the same time preventing rain,sleet, etc., from blowing into the room provided with such window.

Stationary louvers have been used previously as a means of permittingcirculation of air with out undesirable ingress of rain and the like.Such stationary louvers, however, are removed with difiiculty and canonlybe employed in such structures as factory buildings, etc. Thepresent device is of a portable, readily adjustable character so that itmay be used in openings or windows differing materially in width andmoreover the device of the invention may be readily removed when desiredwithout changing or modifying the window frames, sash, or otherfixtures.

Generally stated, the adjustable louver of this the other section sothat the two louver sections are telescopically and inseparably coupled,although they are movable with respect to one another so as to permitthe entire device to be readily inserted or withdrawn from a given ordesired location.

An object of the present invention, therefore, is to provide an improvedtype of removable and adjustable ventilating louver.-

A further object is to disclose and provide an adjustable ventilatinglouver of simple construction. I

These and other objects, uses, advantages and modifications of theinvention will become apparent to those skilled in the art from thefollowing detailed description. For purposes of facilitatingunderstanding, reference will be had to exemplary forms of the inventionshown in the appended drawing.

In the drawing:

Fig. 1 is a perspective view of a window equipped with a louver of thisinvention.

Fig. 2 is a perspective view, partly broken away, showing thearrangement of the elements of the adjustable louver.

Fig. 3 is an enlarged view of a portion only of the louver.

Fig. 4 is a front View of an intermediate portion of a modified form oflouver construction.

1939, Serial No. 290,015

Fig. 5 is a transverse section along the plane VV of Fig. 4.

As shown in Fig. l, a double hung window sash is indicated at I, awindow frame at 2 and the sill at 3. The window I is shown in apartially raised position and an adjustable louver of this invention isgenerally indicated at ill. The louver Ill may be of different heights.

By referring to Fig. 2 it will be seen that the louver N3 comprises twosections which are telescopically interlocked. One section, for example,includes an outer upright M and an inner upright [2, these two uprightsbeing connected together by means of the inclined, substantiallyparallel, vertically spaced louvers l3, I 4, l5, etc. 1 The othersection of the device comprises the outer upright 21 and the innerupright 22, these being connected together by means of the parallel,horizontally disposed, vertically spaced louvers 23, 24, 25, etc. Itwill be noted that the louvers l3, I4, 15,- etc., of one section passthrough suitable openings in the inner upright 273 of the other section.Similarly, the various louvers 23, 24 and 25 are slidable through theinner upright l2. It will be evident, therefore, that the width of thelouver may be readily changed by simply mov ing the outer uprights H and2! respectively either toward or away from each other, the devicebeing'thus capable of variation intotal width without change in height.

Details of construction may be observed in Fig. 3, which shows the twoinner uprights l2 and 22 as comprising channel shapes provided with aplurality of similar openings such as 2'1,

' 28, etc. The louver 25 may be provided with an upstanding rear edgeand a downwardly eXtending front edge, the body of the louver beinginclined downwardly and toward the front. The angle of the body of thelouver is not critical and may be varied, although angles ofapproximately 40 to 60 degrees are normally employed.

The inner upright 22 is similarly provided with inclined openings I1,I13, etc., these openings being similar in contour and'in location tothe openings 21 and28 of the inner upright l2. It is to be noted thatthese openings l1, I8, 21, 28, etc., are slightly larger than the crosssection of a louver, such as the louver l5 or 25, and of similarcontour.

The louver 25 is connected to the outer upright 2| and then extendsthrough the opening 21 in the intermediate or inner upright 12 and isthen fastened to the inner upright 22 of the opposing section of thedevice. The upright 22 may be provided with a plurality of slits oropenings, such as the openings 30 and 3| and the end of the louver 25may be provided with an upstanding flange having tips 32 and 33 whichpass through the openings 30 and 3| respectively and are then bent backso as to firmly fasten the louver to the upright 22.. The louver 25therefore assumes a position immediately above the opening ll in theinner upright 22 and the louver 15 (having one end attached to the outerupright l I) now passes through the opening ill and beneath the louver25 and the end of the louver I5 is connected to the inner upright E2,the mode of connection being substantially identical to that describedfor the inner end of louver 25. It has been found desirable, however,that the ports, such as 30 and 3! through which the tips 32 and 33extend, are positioned above an opening in one of the inner uprights andcorresponding openings, such as the opening 35, are preferablypositioned below the opening 2'! of the-other inner upright, such as theupright I2.

Since the lower edge of a window sash is generally inclined to thehorizontal so as to make such edge conform to the inclination of thesill 3, the upper and lower edges of all of the uprights H, I2, 21 and22 are also cut at an angle to the horizontal so as to permit the entiredevice to rest firmly on the sill and to permit the upper edges of thevarious uprights to rest firmly against the inclined edges of the windowsash. Moreover, the

uprights II, I2, 2! and 22 should preferably be of a width not exceedingthe width of the window sash I so as to permit the outer uprights l iand 2| to nest within the runways formed in the window frame 2 forguiding the window sash I. When installed, as illustrated in Fig. 1, thedevice of this invention is firmly in position and the sash I may beraised above the device without permitting the device IF] to fall out.

Although the various uprights of the device described heretofore andshown in the drawing 7 have been of channel section, and the inneruprights have been provided with ports or openings through which certainof the louver bars slidably extend (such openings acting as guides forthe louver bars), it is to be understood that numerous changes andmodifications can be made in the materials of construction as well as inthe precise design of these elements. For example, the uprights (as wellas the louver bars) can be made of wood, metal or of thermoplasticmaterials and the manner of connecting louver bars to these uprights canbe varied with the materials used. In Figures 4 and 5 a modified form ofinner upright construction is shown wherein 22' represents an innerupright formed of a band of metal having its ends suitably connected asby welding at the overlap 49. The inner or room side of the upright isprovided with inwardly and downwardly extending punched out tabs 4| and42,

whereas corresponding upwardly and inwardly extending tabs 43 and 44 arepunched out of the band 22 on its outer side. The sides of louver bars24' and 25' are then connected (as by welding) at their upper edges tothe tabs 4i and 42, whereas the lower edges of such louver bars areconnected to the band 22 opposite the tabs 43 and 4 1. The louver barsof the other section of theunit, such as the bar l5 are slidable beneaththe louver bars 24 and 25 and, as shown, the tab 44 may guidinglysupport the lower edge of the movable louver bar [5 while its upper edgeportion is slidably received between the band 22 and the bar 25'attached to tab 42. In this form of construction the inner uprights donot have openings, such as I l and I8, but guiding and supporting meansfor the movable louver bars are provided by the tabs.

I claim:

1. An adjustable louver unit of the character described comprising: apair of telescopically locked louver sections, each section including anouter upright and an inner upright, the inner upright comprising ahollow frame having inwardly extending tabs, the tabs on one side ofsaid frame being oppositely directed to the tabs on the other side ofthe frame, and a plurality of horizontally extending, vertically spaced,inclined louvers, connected to the outer upright and connected to thetabs on one side of said inner upright; the louvers of one of saidsections being slidable through and guidingly supported upon tabs of theinner upright of the other of said louver sections. 1

2. An adjustable louver unit of the character described, comprising: apair of telescopically locked louver sections, each section including aninner upright and an outer upright, the inner upright comprising a framewith a room side and an exterior side, each of said sides havinginwardly extending tabs, the tabs on the room side of said frame beingoppositely directed to the tabs on the exterior side; and a plurality ofhorizontally extending vertically spaced louvers having an inclined bodyportion and vertically extending flanges, connected to the outerupright; the louvers of one of said sections being fastened to the tabson the room side of its inner upright and fastened to the frame on theexterior side of its inner upright, the louvers of the other of saidsections being fastened tothe tabs on the exterior side of its innerupright and fastened. to the frame on the room side of its innerupright, whereby the louvers of one section are adapted to fit innesting relation to the louvers of the'other section.

FRED A. WHEELER.

